Gearbox



FIG. 1 is a perspective view showing the ornamental design of a first embodiment of a gearbox in accordance with the present invention;

FIG. 2 is a side view of the embodiment of FIG. 1;

FIG. 3 is a front view of the embodiment of FIG. 1;

FIG. 4 is a back view of the embodiment of FIG. 1;

FIG. 5 is a perspective view showing the ornamental design of a second embodiment of a gearbox in accordance with the present invention;

FIG. 6 is a side view of the embodiment of FIG. 5;

FIG. 7 is a front view of the embodiment of FIG. 5; and,

FIG. 8 is a back view of the embodiment of FIG. 5.

The broken lines depict portions of the gearbox that form no part of the claim. 

CLAIM The ornamental design of gearbox, as shown. 